Thief and fool-proof closure



J. R. BOYD THIEF AND FOOL PROOF CLOSURE March 26, 1935.

' Filed Nov. 22,1934

y pelled vehicles.

Patented Mar. 26, 1935 UNITED STATES THIEF AND FooL-Pnoor oLosURE John R. Boyd, Natchez, 'Miss. Applicationk November 2 2, 1934,` Serial No. 754,347 5 claims. (c1. 22o-s6) following taken in connection with accompany-g'A ng drawing illustrating an operative embodiment.

In said drawing:-

Figure 1 is a vertical sectional view showing the invention applied, for example, to the lling neck or tube of a fuel tank;`

Figure 2 is a view vof the parts of Figure 1 taken at a right angle thereto with the open position of the parts suggestedin dotted lines, andv Figure 3 is a rhorizontal sectional view taken on the'line 3-1-3 ofFigure2.

Referring vspecifically to the drawing, 10 designates the lling tube, neck or the like of a tanky or other'receptacle l1, for example, the fuel tank of an automobile or self-propelled vehicle, alf though the invention is capable of use in connection with receptacles generally.

Pivoted to the upper end ofthe neck 10 by means of a hinge 12 is a cover orcap 13. Saidk cover or cap moves ona horizontal axis and in closed position may b'e latched' through the mel dium ofa resilient fastening element 14 carried by thecover or closure 13 andhaving a shoulder r15 adapted to hook under a lug 16 carried by the neck. t

Disposed within the. neck are a plurality ofv rings 17 at diiierent heights to each of which is pivoted or hinged on ahorizontal axis at 18, a plate or baffle 19 which lin closed position rests on the respective rings, the hinges 18 are located on oppositesides of the neck. 1

A rod or link 20, diagonallydisposed',v is pivoted as at 21 to the closure 13 and at 22 to the baiiiey plate 19 while a rod or link 23 is lpivotally connected to the baflie plates 19 at 24.

As aresult of the construction described, opening of the cover or closure 13` to the dotted liney position suggested in Figure 2 will cause corresponding opening of the baffle plates 19 as also rvention.

It will be noted thatr of the plates by means of the rods 20 and 23,01"

`equivalent means. When the closure 1'3 isreleased, the weight of thebaie 19 and rods 20k and 23 will immediately and automatically close .v

the cover 13.' o v l l I t will be apparent thatv when the cover 13 and the vplates or baflles 19 are in the position shown in broken lines in Figure 2, that filling of the tank 11 may be accomplished, butthat removal of the contents of the tank 11.by siphoning cannot be accomplished because of thestaggered PATENT OFFICE `suggested in dotted lines, due tothe connection.

arrangementr of the baiiie plates 19 when in thek dotted line position as stated.r v Various changes may be resorted to provided they fall within the spirit and scope of the in- I claim as my inventionz- 1. In combination with vthe lling passageof a tank or the like, a cover for said passage, and

a plurality of baiileelementspivotally mounted within ythe passage and interconnected with each other and with said closure for vopening. move-l` ment through opening movement `of'said closure,

the pivot means forthe baille elements being" on opposite sides orv the passage. 1 o

2.` In combination with thelling passage of a tank or the like, a plurality of bailleL elements disposed at different elevations and pivotally f 30 mounted within the-passage, the pivot means `for the baffle elements being on opposite sides of the passage, means connecting said elements to-l gether for "simultaneous opening and c'losingrV and a closure for said passage having a `connection with one of said baffles whereby the baffles of said closure.

3. In combination with the fmiiig passage f 'I u tank or the like, a plurality of balileelements=4 disposed at different elevations within the pas` sage, means connecting said elements together for simultaneous opening and closing, a closure 35' will be openedand closed through the movement l for said passage having a connection with one:` V`

and closed through the movement of said 'closure, rings within the passage. and means pivot- `of said bafeswhereby the baiiles will be openedv 45 ing the baffles to said rings, the 'pivot means for,l

the baiiiesbeing on opposite sides of the passage." i

4. In combination with thelling passage of a tank or the like, a plurality of baffle elementsv of said bales whereby the baies will be opened ,5 disposed at different' elevations within thep'assage,means connectingfsaid"elements together for simultaneous opening and closing, a' closure L for said passage having a connection with one A e and. closed throgh the movement of` said clov plates tothe respective rings Vand on opposite s ure, rings wthinthe passage, and means pivotsides of the passageVnlinkage connecting one Ving l*the bafes to said rings on opposite sides of kkbattle plate to the other ybaille plate, a cover for said passage. n saidy passage'pvotally connected thereto,V and` 5`r` 5. In combination With'a filling passage of- 'a linkage pivotally connecting the uppermost baiile tank or the like, rings therein at different eleplate and saidcover,` the last mentioned linkage Y vations, baiie plates vnormally seated on said being normally disposed atan angle. rings, means pivotally connecting ythe bafiie 'JOHN R. VBOYD.` 

